Chaeles w



(No Model.)

0. W. GARDOT.

FRICTION CLUTCH.

No. 307.434. Patented Nov. 4, 1884.

Witnesses. L Inventor h .Glmdas 841F510 i NY PETERS. F'hatn-Llllwgnplmr.wasmnmm 11c The wood is put in place in sections.

section is placed within the metallic portions tlnrrnn Sra'rns Parent@rrren.

CHARLESWV. GARDOT, OF JAMESTOWVN, NE\V YORK. I

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 307,4:3&, datedNovember 4:, 1884.

Application filed April 10, 188-1. (No model.)

To a, whom it mag concern.-

Be it known that 1, CHARLES W. Oiinno'r, a citizen of the United States,residing in Jamestown, in the county of Chautauqua and State of NewYork, have invented certain new and useful Improvements in Frietion-Clutches, of which the following is a specification.

The object of this invention is to provide the means for easily startingand stopping machinery by means of a noiseless friction device, theconstruction and operation of which will be fully and clearlyhereinafter shown by reference to the accompanying drawings, in whichFigure 1 is a vertical central section through the clutch and itsoperating and supporting mechanism. Fig. 2 is afront elevation of theclutch, showing a section through line X X, Fig. 1. Fig. 3 is a sideelevation of a portion of the clutch, showing a section through theclutch-rim in line Y, Fig. l. Fig. 4 is a sec tion through line Z Z,Fig. 3. Fig. 5 is a side elevation of the sliding sleeve for operatingthe clutch; and Fig. 6 represents a portion of the clutch-wheel andclutch-rim, showing the construction when wood is used for the wear ingportion of the rim.

In said drawings, a represents the pulley, which turns loosely on theshaft, except when made fast so as to turn with it, as will hereinafterappear.

a is the clutch-rim or wearing portion 0 the clutch-rim. If desired,this portionmay be filled in with wood, (see Fig. 6, in which 66'represents the wood with the grain running from the circumference towardthe center.) Each (0 of the pulley.

Betweenthe parts a and one end of each of the wood sections a is awedge, a, having a screw-bolt, a, which passes through a rim, to, of theclutch wheel or pulley. By means of this bolt a and the wedge, as willbeseen, the section of wood can be tightened in place. The elutch-ringl) is a thin metallic hoop hav in g the heavier portions 12 b near theends ofthe hoop,which come together, or nearly so. WVhen the clutch isintended to run loosely on the shaft, it is kept in place by the flangeb on the clutch-rim a. (See Figs. 1 and 4.) The portion I) is providedwith two upwardly-projecting portions or cars, 5 between which the armor leverb is jointed by a pin or bolt, b". The lower end of the arm b isjointed to the other end of the hoop by a pin or bolt, b The arm 0 issecured to the shaft 0 so as to turn easily thereon, but is prevented bya pin, 0 from moving longitudinally on said shaft, and the'upper end ofthe arm Z) rests against the arm 0 at the point 0 c is a spring securedto the arm 0 by a bolt, 0'. The opposite end of the spring 0 rests inthe notch c of the clutch ring or hoop b.

c is the frame for supporting the shaft, which may be made in anywell-known way. The sleeve d is secured to the shaft 0 by a feather, d,which prevents it from turning 011 the shaft, but allows a freelongitudinal movement back and forth along the shaft. It is providedwith the usual groove, (1, into which a pin or friction roller orrollers project from the hand stopping and starting lever d, which leveris secured by a bolt, (2, to any suitable point of support, (Z (See Fig.1.) The sleeve dis provided with a diagonal slot or opening, (1, throughwhich projects a pin, 0, from the hub c" of the arm 0. It will now beseen that a movement of the hand-lever d in the direction of the arrow Vwill move the arm c in the direction of the arrow V, (see Fig. 2,)

which will force the ends of the hoop or ring I) so as to tighten it andhold it rigidly within the rim a, so that it will turn with the shaft. Areverse movement of the hand-lever will draw the ends of theclutch-ring 1) toward each other, the spring 0" assisting, and therebyloosen it, so that the shaft will turn within the clutchpulley and thepulley will remain stationarv while the shafts turn. L

If desired, the portion of the clutch-hook I) may be made so as to beadjustable, and thereby allow the hook I) to be made longer, so as tocompensate. for the wearing of the same. Such parts can be madeadjustable by means of a wedge toseparate them and aset-screw tofastenthem in place when adjusted in any Well-known way. j

When it is desired to use the clutch on the driving-shaft, so that itwill move with the shaft in one direction and allow the shaft to turn inthe opposite direction without moving the clutch, or turn within it, allthat is necessary to do is to fasten the arm 0 rigidly to the shaft anduse the device without the sleeve d and lever (1 I claiml 1.A'friction-clutch consisting of a pulley provided with a rim adapted toreceive a clutch-hook having an arm jointed to one end of the hook by abolt, 12, and to the opposite end by a bolt, 6 with the upper end ofsaid arm resting against an arm, 0, connected loosely to thedriving-shaft, and being provided Witnesses:

JOHN YoRK, BYRON ABELL.

